# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
# copyright and related rights waived via CC0 1.0

REFERENCES: |
    <a href="https://refractiveindex.info/download/data/2017/sumita_2017-02-02.agf">SUMITA Zemax catalog 2017-02-02</a> (obtained from <a href="http://www.sumita-opt.co.jp/en/download/">http://www.sumita-opt.co.jp</a>)<br>See also <a href="https://refractiveindex.info/download/data/2016/sumita_2016-02-01.pdf">SUMITA optical glass data book</a>
DATA:
  - type: formula 3
    wavelength_range: 0.4 1.55
    coefficients: 3.2503692 -0.013195714 2 0.049790724 -2 0.0022430157 -4 -7.7567761e-06 -6 2.1169316e-05 -8
  - type: tabulated k
    data: |
        0.360 1.9789E-05
        0.370 1.2365E-05
        0.380 6.0109E-06
        0.390 3.2054E-06
        0.400 1.8742E-06
        0.420 7.5836E-07
        0.440 3.7280E-07
        0.460 2.2650E-07
        0.480 1.5593E-07
        0.500 1.1300E-07
        0.550 5.2839E-08
        0.600 4.3166E-08
        0.650 4.6764E-08
        0.700 4.4743E-08
        0.800 3.1911E-08
        1.060 1.6887E-08
        1.500 3.5864E-08
        2.000 3.5405E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: -6.01e-06 1.26e-08 -1.23e-10 1.06e-06 1.37e-09 0.294
    nd: 1.84666
    Vd: 23.9
    glass_code: 847239
    density:
      - value: 3490
    thermal_expansion:
      - temperature_range: 243 343
        value: 8.9e-06
      - temperature_range: 293 573
        value: 1.06e-05
    dPgF: 0.018
    resistance:
        climatic: 1.0
        acid: 1.0